Carbureter.



PATBNTBD JAN.'1, 1907.

G. 13:. PRANQU1ST- GARBURETBR. AyrLmATxox FILED AUG. 11. 1905.

,1l/111111111011111u1u/111111111110 gtkmm?? if@ i [L UnrrEnsrA'rns .PAIE-NT onirica.-

GUSTAVEE. ERANQUIST, 1? NEWYORK, N. Y.

CABBURETER, 1

No 84o,204. l.

. -Toall it may concern: 'i l Be it lrnownfthatl, GUsTAvE E. FRAN- QUIs'r, a citizen of the United States, residing atthe city of'New York, in the borough of Manhattan and State-of N ew York, have infventedcert'ain new land useful Improve;j

i ments in Carbureters, of whichthe following is `itfull, clear, andexaet description. l

My invention -relates to carbureters for hytrol o the engineis obtained bythe manipulation of a.' single lever or other simple conilbinationof parts. ,l 3 I this classof vlevices it`is desirable to'op- -erate the engine ata very slowspeed at cer- -tain times, just sufficient to maintain its rotation. lWhenin use, .the engine should be controllable; to suit all of the varied conditions of speed and grade of road, as well as different atmospherlc conditions dueto yaria- :tio-ns in heat or cold or humidity. It is the object of my invention to provide a -carbureter to satisfy all the requirements which 'arise in ractice and .to further provide a device which shall be `simple vand Veasy to construct, elicient in operation, and hav' v in `arninimurn number of arts. e

1th these and other o Jects 11- 1 view lnventlonconsrsts inthe constructlon, combination, location, andarrangement of arts, all as `will be morel fully hereinafter set Orth,-

assed over a su ply of gasolene or other hycarbon by w n ch an explosive mixture is generatedf When the engine has arrived at.

its running speed, it is advantageous in prac tice `to supply a certain quantity of pure cool 5o air for .a purposeand inv aspecial way which will later more fullyappear. I n the use of,`

l. my invention I accomplish all necessary fnctins by the motion of a single operating part, which -is controlled bya regulatinggear within reach of the operator on the'car.

dro'carbon-engines, and more particularly to 'engines v,o i motor-velncles, motor-boats, and llke a paratus 1n which a widely-varyingconusuall cylinder-jackets, and 'is afterward Specification of'Letters Patent.

Application led August 11, `1905. Serial No. 273.719.

Patented Jan. 1, 1907.

Referring now to the drawings and to the various views and references-signs appearing'l thereon, in which like parts are. designated by the same-reference .signs wherever they occur, 1 designates the lloat-feed-chamber-of a carbureter, and 2Yiudicates. broadly, the regl ulatingandair admitting and mixing chamber on the carburet-er.` The. fioat. feed-chamber,

`which may be made in any convenient or de.

sired way, forms no part of the'present inven tion. It is merely essential 'to provide a device at this point which shall maintain a supply of volatile hydrocarbon fluid in an a'spirater pipe or nozzle, overwhichthe air may be led. 7 indicates such pipe or nozzle, and

I have arranged chamber 2 in such a way as to support and hold thispart in proper relation.` In the form of my invention shown the chamber 2 is provided with cavities 3 and 4, `which are separated by a web or diaphragm.

6 indicates a tubular extension of the cavity 4, which projects into the cavity 3 and 4preferably occupies a central positiontherein. The flaring extension 6 has a portlon 6,

which isof a comparatively small diameter, and a's'econd portion 6b, which flares or enlarge's, so as to increase the diameter of the tubular extension to the point where it enters the chamber or cavity 4l.'-V Guided and .supported lby the walls of the tubular exten.-

sion 6 I have arranged the nozzle 7,v above re ferred to, which is also. supported at the outer casing of the chamber in such way that the orifice of the nozzle is located approxi- -mately at the center of the tubular extension 6.1 For this purpose Athe nozzle may Vbe `formed with a screw-threaded portion 8, having a slotted head 8 which screws into a part of the outer casing, so that the nozzle isadjustabl'e therein;

9 indicates a screw-plug Iwhich I arrange at la point opposite to the nozzle 7, so thatrthe l l latteris accessible-for cleaning, for repairs, or

any otherpurpose.

10 indicates a plug having'screW-threads' 1-1 thereon which can be.- screwed into the walls of the chamber 2 ata'p'o'intdiametric- 4'ally opposite from then'ozzle 7, the plug passing'through .a wall of the tubular y.extension y6 for this purpose It is to be understood thatthe cavity 3 has ports X, which are-ie 'communicationjmh a as a chamber surrounding the jacketof the`- engine. f I have omitted the showing of these ports from the drawings in order te avoid confusing the illustration of the remaining arts but it is te beunderstood that they are ocated in anv convenientway on the side which enters aI correspimdiiigly-threaded aperture 17 inthe chamber 2, so as to he ad- ]ustable fwithfrelat ion to such chamber.l g

iS/indicates a locking-nut which is screwed -ulpon thc threaded portion lt of the guidings eeveI l5, so as to lirinlv hold said guidingslceve in an v position 't o which it'. has been adjusted. ',lhe sleeve 15 is also tornied with a hexagonal'ptit-tion l.) in the preferred torni of my invei-ition. so as to permit a convenelit adjustment of tlic sleeve.

2t) denotesthe valve-stein guided by the sleeve le,- and I haveshown a spiral spring 21 surrounding thisl stein and arranged to iioi mallysprinpress'the valve 14 against its seat 15.

The valve 1.4 not onl)Y constitutes` a means for closing the passi'ige l'roin the float-feed chamber to the cylinder-inlets, but it luis additional functions, and l provide a iititiiber 'of spccially-ariangeil poi-ts by which these additional `purposes are accomplished.

. '.lffit'idicates a. port upon valve 14, and 22 indicates a corresponding port or opening in the.cylhitler-casing. ',lhese ports are so arrangedt'as to be ou't of register with one anotlierilvFlien the valve l-t is l'ttll) closed, but. pass into alincinei'it after acertain movement; oihefialve. l

Qilaiid 2': are generally similar to the ports 2 and 22', except that I arrange these ports a greaterdistaoceoi'it 0l register with one another than ports 22 and 22', so that greater movement of the valve is necessarv. to briiiif thenji intoa'linemcnt.

24 and 2-1 indicate still further ports iipoii the-valve and casing which are arranged to move into alinenient when the valve is opened widely.

The ports above mentioned aie'ot dill'erent sizes, so that as the valve moves outward an increasing quantity of coo'l air is admitted,

' and in practice I arrai'ige the vtil'ves so thatthe adinissit'i'n of cool air exactly corresponds to the needs of the engine. for that particular position o'l` the valve.

lt will be understood that the amount of cool air required is not necessarily proportional t the movement of the valve,4 and in. practice the variedgeenittittions necessitateparticular inixtii gine at this time,

indicate additional ports which f niizixt irre.

u l'of cool airand from the carbureter-cliainber in a manner which `.will later moreftilly appear.A

25 indicates-"a ndt'ch which Il form-in the lower edge of the valve 14, so that a small passage is provided from the earbureter to the engine when the valve is, closed. The purpose of this netehis to enable an engine to be run at a Very slow speed while the car is standing still in order to avoid the necessity may be manually turned in the operation ofV cranlt'iiig; btit in anycase a-vaenuin is created in ihe cylinders and air is sucked from the soiirce'ot' hot-air stip )ly into the chamber 3 and through the ttibiillar extension 6. By virtue of the comparatively.small diameter ol' the tubular e. tension6 the air wishes past 4the supplypipc 0i"y nozzle 7 with-eensiderable rapidity andsu'iclks or aspirates' a quant ity of gasolene from' said pipe, which is generally proportional to the quant-ity of air. .\t this time all of the ports 22, 23, and 24 :ne closed and the heated and carbiireted air troni the tubular extension 6 is ofra richness and'. character suitable to the needs ofthe eng Should it now be desired to increase the speed of the engine, the valve 14 is drann outward, so that the air iiiixtnie of "1J-ranking?- when it is desired to again run IOO is not thi'ottled in its path to the cylinders,

but it' is sucked through lthe carbureter l'rccl v with a velocity propt-irtiona-l to the speed ol the engine. Under these circumstances the `speed oll the ei'igineglapidly increases and the velocity ot' the air-'current in the tubular extension becomes proportionally increased, and since an aspirator works more ell'iciei'itl'v l'or high velocities a greater amount ol' gasolenc is absorbed than is'desii'able. Accordingly the ports 22 and-22 come into register and admit a qiiantitv of cool pure air inte the mixture which is just siillicicnt to, dilute it properly. An additional l'actor oli this cool airis to provide a more condensed inixture,or, in other words,a greater weight of gas per stroke ot' the engine with proportionately greater power. As the valve l-l is openedriiiore ai'itl more widely' the engine t'altcs on l'iirthei increased speeds and the new conditions necessitate greater and greater amounts ol' cool air, which is appropriately admitted l'or each position ot' the registering: ports 23 22 and 24 24.

ll'nder variations ol' weather and temperature it soinet ii'nes becomes neccssau'v tovary izo the propt-ations ol. cool itil zitlinittetl to the This is conveniently done in my device lay-releasing the lock-nut `lbfand ardf illsting the guiding-sleeves 15 in and out oi" .thelvcasing 2. I prefer .to niake'this adjustment by successively vscrewing'the guiding- 5 sleeve 15 exagtly one. turn in or out. ofthe' easing 2, so that successive Aadjustments are l provided according to theserew-pireh; but,v

if; desired, the guiding-sleeve may be turnedcircumferentially through a slight angle, so

lo s to partially throttle all of the ports 22, ".23,

Vvand Q4.

lWhen the car isstopped, the val ve"14 Aclosed upon its seat, at whieh time the opening 25 is just suflicient to keep the engine l5 slowlyrotating.

Y It will b e'seen that I provide a earlm-reter whichA is adapted 'to al1-the conditions which arise in practice. l

What I claim ssleeve adjustably arranged within the walls of said cuvityja pluralitv of pox-ts or openings in said guiding-sleeve, a valve having a z5 pluralityr of ports arranged to successively `register with said firstnamed vports when the .valve is opened;v a diaphragm having a tubu'- ln extension, a supplypijw or nozzle within said extension. and means for moving the 1. In a float-feed earbureter, a ehaniber or' casnig havingl a cavity therein, agniding-` valve. into seating relation upon said dia-3o ,and nieans for admittingasniall lquanti@v of 3. In alloatgfeed carbureter, a chamber or easing having'a threaded guiding-sleeve pro- 45 jeft'ing therefrom, ports wir hin said guidingsleeve arranged atdill'erel-it angular pos-ii tions, a valve having ports adapted'to sue- "eessivel' register with sa id liljstaianied ports,v

mits earbiii'eled air to the engine. ln witness whereof 1 st lbscribe niv'signature in the p resence'ol' two witnesses. i

' GUSTAVE EFRANQUIS'I v'lNitnessesz i I FRANK S. BER, WALno M. CHAPIN.

and additional n'ieans wherein said valve ad-jSo 

